Federal NAICS Codes

NAICS 333613: Mechanical Power Transmission Equipment Manufacturing

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 333613.

NAICS 333613 federal market metrics

Total obligations
$7.3B
Total awards
245,132 awards
Active obligations
$1.1B
Size standard
750 employees

What this NAICS covers

NAICS 333613 covers manufacturing mechanical power transmission equipment such as industrial gears, gearboxes, couplings, driveshafts, and related fabricated components, including factory fabrication, machining, assembly, testing, and quality record keeping.

Federal opportunities under 333613 typically involve producing transmission assemblies to engineering specifications, performing factory acceptance and quality testing, providing traceable material and inspection records, packaging for shipment, and supplying replacement assemblies or spares for equipment sustainment.

FY2026 snapshot

Obligations
$152.3M
Awards
4,438
Average award
$34.3K
Change from FY2025
-79.6%

Recent awards

Search contractors

$27,120

SIEMENS ENERGY INC

National Aeronautics and Space Administration

PIID
80NSSC26P1411
PSC
6640 - LABORATORY EQUIPMENT AND SUPPLIES

$81,637

FAIRBANKS MORSE, LLC

US Coast Guard

PIID
70Z08026P21081B00
PSC
2815 - DIESEL ENGINES AND COMPONENTS

$1,231

SAJJAD, ZAINAB S.

Defense Logistics Agency

PIID
SPE7L026F5246
PSC
3040 - MISCELLANEOUS POWER TRANSMISSION EQUIPMENT

$11,900

LEE AIR COMPANY, INC.

Defense Logistics Agency

PIID
SPE4A626PW397
PSC
3040 - MISCELLANEOUS POWER TRANSMISSION EQUIPMENT

$2,336

KAMPI COMPONENTS CO INC

Defense Logistics Agency

PIID
SPE7L126P8456
PSC
2520 - VEHICULAR POWER TRANSMISSION COMPONENTS

FAQ

What work fits NAICS 333613?
  • Fabrication of precision gearboxes to engineering drawings with specified torque capacity, backlash limits, dynamometer testing results, and material traceability documentation.
  • Production of shafts, splines, and couplings with specified heat-treat hardness profiles, magnetic particle inspection reports, and dimensional certificates.
  • Manufacture of belt drives and pulley systems sized to power transmission specifications, complete with balance testing and installation fitment instructions.
  • Low-volume runs of replacement transmission assemblies matching OEM form, fit, and function with first-piece inspection reports and serialized part marking.
When is NAICS 333613 a weak fit?
  • Procurements for electric motor manufacturing where the primary commodity is the motor prime mover rather than mechanical transmission components and gear-cutting processes.
  • Contracts for hydraulic pumps, motors, or fluid power systems that transmit power via fluid rather than mechanical shafts and gears, with different manufacturing processes and tests.
  • Overhaul or repair work on customer-owned gearboxes where the requirement focuses on refurbishment and return-to-service rather than original manufacturing and new part production.
What solicitation language points to NAICS 333613?
  • Specification requires production to drawing with GD&T tolerances, heat-treat specifications, and material certifications (traceability to mill batch).
  • Deliverables include dynamometer test reports, torque and efficiency measurements, runout and backlash test data, and first-article inspection reports.
  • Labor categories list gear-cutting operator, CNC machinist, heat-treat technician, metallurgical inspector, and assembly technician with shop-floor qualifications.

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